Restore Missing Language Bar

In Wndows OS (Windows XP, Windows 7, Windows 8) there is option to change input language you can select your own language from languge bar and type in your reqiured language. Some times language bar is missing from taskbar (The bottom).

What to do when the language bar is not appear ?

If the language bar is not appear or display in task-bar then follow given steps to restore language bar on task-bar: